A Karzer was a designated lock-up or detention room to incarcerate students as a punishment, within the jurisdiction of some institutions of learning in Germany and German-language universities abroad. The American writer Mark Twain wrote about the karzer in Heidelberg in his book, A Tramp Abroad (1880).
The Karzer at Göttingen University
Graffiti in the Heidelberg Karzer
Engraving by Winthrop Pickard Bell on a cell-door in the Karzer of Göttingen University
The University of Jena, officially the Friedrich Schiller University Jena, is a public research university located in Jena, Thuringia, Germany.
University of Jena around 1600. Jena was the center of Gnesio-Lutheran activity during the controversies leading up to the Formula of Concord.
Friedrich Schiller.
Ernst Haeckel.
Inner courtyard with cafeteria of the Old University Building.